Abstract
In this paper, to assess the varietal ability to compensate defoliation damage caused by the fall armyworm, a trial was carried out at the INERA Mvuazi research center. The aim of this study was to determine the limit threshold of damage that could cause the significant loss of the harvest of the quality protein maize distributed in the Democratic Republic of the Congo. To do this, three factors including two varieties (Mudishi-1 and Mudishi-3) of quality protein maize, four rating damage and two growth stages were used into a factorial design with 3 replications. Simulation of damage caused by FAW consisted of cutting of blades for all visible leaves of plants. Damage rates simulating leaf destroying were 0%, 25%, 50%, 75% and 100%, occurring at two growth stages: stage V3 (2 to 4 weeks after emergence) and stage V7 (flowering stage). Results showed that damage factor combined with growth stage factor significantly influenced (p < 0.05) the yield component variables including yield losses, harvest rate, ear sizes, number of ears harvested and yield as well as the market quality of the ears, based on appearance quotation. Damage rate more than 50%, at all growth stages studied, caused grain losses upper than 50% regardless of variety. However, damage less than 50% at V3 stage resulted in grain losses under 10%. At the end of this study, we showed that the varieties of maize QPM (Mudishi-1 and Mudishi-3) would be able to compensate the damage caused by the FAW and achieve its yield, if the attacks damaging 25% of the leaves occur during V3.
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Claims 4
Claim · model-written summary
Defoliation damage and growth stage jointly affected yield loss, harvest rate, ear traits, yield and market quality.
- Treatment
- damage factor combined with growth stage factore0
- Interactor
- Spodoptera frugiperda
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Spodoptera frugiperdat0pest - Outcome
- yield losses, harvest rate, ear sizese0
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“damage factor combined with growth stage factor significantly influenced (p < 0.05) the yield component variables including yield losses, harvest rate, ear sizes, number of ears harvested and yield as well as the market quality of the ears, based on appearance quotation.”
t0“Spodoptera frugiperda) Attacks and the Compensative Response of Quality Protein Maize”
Claim · model-written summary
Defoliation above 50% caused grain losses above 50% at both growth stages regardless of variety.
- Treatment
- Damage rate more than 50%e0
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdat0pest
- Outcome
- grain lossese0
- Direction
- upper thane0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Damage rate more than 50%, at all growth stages studied, caused grain losses upper than 50% regardless of variety.”
t0“Spodoptera frugiperda) Attacks and the Compensative Response of Quality Protein Maize”
Claim · model-written summary
Defoliation below 50% at V3 produced grain losses below 10%.
- Treatment
- damage less than 50% at V3 stagee0
- Interactor
- Spodoptera frugiperdaSpodoptera frugiperdat0pest
- Outcome
- grain lossese0
- Direction
- undere0
- Value
- 10%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“damage less than 50% at V3 stage resulted in grain losses under 10%.”
t0“Spodoptera frugiperda) Attacks and the Compensative Response of Quality Protein Maize”
Claim · model-written summary
Mudishi-1 and Mudishi-3 could compensate 25% leaf damage at V3 and attain yield.
- Material
- Mudishi-1 and Mudishi-3e0
- Treatment
- attacks damaging 25% of the leavese0
- Interactor
- FAWe0pest
- Outcome
- compensate the damagee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the varieties of maize QPM (Mudishi-1 and Mudishi-3) would be able to compensate the damage caused by the FAW and achieve its yield, if the attacks damaging 25% of the leaves occur during V3.”
The same questions in other papers
stage · Spodoptera frugiperda · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.